Bleaching compound



e-iei Finest? www awn weaver CHARLES TOPPAN, OF SALEM, MASSACHUSETTS.

.sL EAcHlNe COMPOUND.

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To all whom it may concern.-

Be it known that I. CHARLES TOPPAN, of

thecity of Salem, in the county of Essex and- State of Massachusetts, have invented an Improvement in Bleaching Compounds, of which.

the following is a specification.

The object offmy invention is to produce a compound for bleaching cotton, 'linen, and.

pound has an affinity for the'cOIOriDg-matter contained in cotton fabric, or raw cotton-and other fabrics, composed of vegetable fibers or fibrous substances--such as raw cotton, flax,

I hemp, jute, wood pulp, &c.containing veglg A- etable coloring matter in a convenient and very expeditious manner without reducing the strength of the finest fibers, I find by experiment that the detergent properties of my improved composition of matter is such that the fabrics, goods, and fibers bleached thereby are rendered very soft and pliable, andalso more susceptible to receive and retain colors or dyes, particularly such as belong to the class of aniline-colors. 1

In carrying out myinvention I produce [he new'compositiou of matter about as follows: Take three parts, by measure, of expressed oil of mustard-seed; three parts, by measure, of melted par-afiine; three parts, by measure, of caustic soda of 20 Baum, and thoroughly mix the same, so as to form a saponaceou's/compound. Then take one part, by weighhbf this compound and two partsby weightpo f pure tallowso'ap and thoroughly mix the same together.

To prepare the bleaching solution, dd one ounce of the above compound to each gallon of water contained in any suitable vessel, boiler, or keir; then add the same quantity, or one ounce, of sulphate of soda to each gallon of water; then add one fluid ounce of caustic soda, 20 Baum, to each gallon of water,- then I heat the solution so as to dissolve the compound contained in the boiler; then immerse the fabric, goods, or fibers in the hot solution and close the vessel; then boil the same sufiicientl y to bleach. The time required will vary according to the kind and quality of fabrics or 4.5

fibers being treated, and, as the compound will not injure the finest fibers, overboiling will not detri mentally affect the same.

I find by experiment that the above coma similar vegetable fibers, and that it assimilates therewith and dissolves the same so that it is very quicklyand'effeotually'freed and removed I, from the fiber of th-e tt'mtton fabric or other 5 whereas the common process requires about 6;;

twenty-four hours to produce an inferior re sult. The tar-like coloring-matter contained in raw cotton or cotton fabric and similar textiles and the pyroligneous acid contained in 'wood pulp are so very fully and eifectually dissolved and freed from the fibers and. removed by boiling the goods'in this solution that they will remain perfectly white for along time, and will not turn yellow when carried in stock, or when exposed to the rays of the sun an indefinite period, the bleaching is so thorough and permanent.

Having thus described my invention,what I claim is- The above-described bleaching compound,

consisting of expressed oil of mustardseed, paraffine, caustic soda, tallow-soap, sulphate of soda, and water, as set forth.

CHARLES TOPPAN. Witnessesl SYLvENUs S. WALKER, WILLIA1n H. PARRY.

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